Stereoscopic camera



June 17, 1941. A. HENNICKE ETAL STEREOSGOPI C CAMERA Filed NOV. 3, 1938 Ewen/ora 191/! flea/ville. 0201:

Patented June 17, 1941 STEREOSCOPIC CAMERA Alfred Hennicke and Hugo Bessel, Hamburg- Altona, Germany Application November 3, 1938, Serial No. 238,643 In Germany February 10, 1938 4 Claims.

This invention relates to a film container in stereoscopic cameras.

The main feature of the invention resides in For viewing purposes, the endless film is separated at a suitable point and can then be moved past the objectives of a viewing apparatus.

Two embodiments of the invention are illustrated, by way of example, in the accompanying drawing, in which Figure 1 is a sectional view of one form of the film guide according to the invention, with a dark slide, in a stereoscopic camera;

Fig. 2 is a section on the line 22, of Fig. 1;

Fig. 3 isa partial sectional view showing the general arrangement of Fig. l but another type of film guide;

Fig. 4-is a section on the line |4, of Fig. 3; and

Fig. 5 is a diagrammatic view of the dark slide or holder for the construction shown in Figs. 3 and 4. l

The dark slide 2 insertable in the body I of a stereoscopic camera holds an endless film strip 3 which can be exposed through the objective lenses 4. For this purpose, the dark slide is provided with two openings 5 through which light coming from the lenses 4 can pass to the film 3. The dark slide 2 contains also the film transport means 6, I rotatably mounted therein and fitted with the handles 8, 8a.

The transport means '6, l are disposed between deflecting members 9, ID for the film 3. In the construction shown in Fig. 1 the deflecting means 9, l0 constitute rollers rotatable on the shafts ll arranged in the walls of the holder 2. The shafts it rest in slotted holes l2 to permit a slight variation in their distance from the transport means 6, I for the purpose oi keeping the film 3 constantly taut by means of springs l3 which act upon the rollers 9, to.

As shown in Fig. 3, the deflecting means 9, III for the film 3 are rigidly connected with the longitudinal walls of the holder 2 and the transport means 6, l are displaceable relative to one sioning of the film 3 is attained through the tension springs l5 which connects the shafts I of the transport means 6, l.

The endless film 3 embraces the transport means 1, and its lower portion is then placed directly on the deflecting member ID whence it passes to the deflecting member 9 and thence to the transport member 6 which moves it back over the film portion disposed on the deflecting member 9. From the deflecting member 9 the film 3 passes over the film portion surrounding the deflecting member In back to the transport means I.

If the film 3 is to be moved past the lenses l, the handle 8a of the transport means 'I is turned in the direction of the arrow A, whereby the outer film portion 3a on the deflecting member Ill is lifted off from the film portion 3i resting directly on the member l0 and is enabled thereby to move in the direction of the arrow B and drag along also the film portions positioned on the deflecting member 3 and the transport means 6. If the transport means I is turned in the direction of the arrow C, the outer film portion 3a surrounding the deflecting member III is pressed firmly upon the film portion 3: and the latter upon the member [0, whereby the film is Prevented from rotation.

When the film 3 is to be moved in opposite direction, the handle 8 of the transport member 6 is turned in the direction of the arrow B.

As indicated in Fig. 1, the holder 2 may be inserted from the rear in the body I in axial direction of the lenses 8, or, as shown in Figs. 3 to 5, it may possess slides l6 and be laterally inserted in grooves ll of the body I in known manner.

In order to control the motion of the film 3 and permit proper positioning thereof for the subsequent exposure of parts, the transport means 6, I may be connected with a counter, not shown.

We claim:

1. In astereoscopic camera, a laterally elongated casing having a front wall provided with a pair of laterally spaced openings, a housing carried by said casing and projecting forwardly therefrom, said housing having a pair of lens openings axially alined with the first mentioned openings, a pair of guides located in the ends of said casing, a pair of rollers arranged in said casing adjacentto the transverse center or the casing on opposite sides thereof, said rollers being adapted to engage within opposed portions another and to the deflecting means 9, I0. Tenof an endless film and the guides being adapted to guide said film between themselves and to said rollers, means exterior of the casing for operatingone of said rollers, and tensioning means for said film.

2. In a stereoscopic camera,'a laterally elongated casing having a front wall provided with a pair of laterally spaced openings, a housing carried by said casing and projecting forwardly therefrom, said housing having a pair of lens openings axially alined with the first mentioned openings, a pair of guides located in the ends of said casing, a pair of rollers arranged in said casing adjacent to the transverse center 01' the casing on opposite sides thereof, said rollers being adapted to engage within opposed portions of an endless film and the guides being adapted to guide said film between themselves and to said rollers, means exterior of the casing for operating one of said rollers, and spring means urg-- ing said guides apart.

3; In a stereoscopic camera, a laterally elonopenings, a pair of guides located in the ends of said casing, a pair of rollers arranged in said casing adjacent to the transverse center of the casing on opposite sides thereof,.said rollers being adapted to engage within opposed portions of an endless film and the guides being adapted to guide said film between themselves and to said rollers, means exterior of the casing for operating one of said rollers, said rollersbeing mounted for movement toward and from each other, and

spring means urging the rollers toward each other.

4. ma stereoscopic camera, a laterally elongated casing having a front wall provided with a pair of laterally spaced openings, a housing carried by said casing and projecting forwardly therefrom, said housing having a pair of lens openings axially alined with the first mentioned openings, a pair of movable guides located in the endsrof said casing. a pair of rollers arranged in said casing adjacent to the transverse center of the casing on opposite sides thereof, said rollers being adapted to engage within opposed portions of anendless film and they guides being adapted to guide said film between themselves and to said rollers, means exterior of the casing for operating one of said rollers, said guides being mounted for movement toward and away from each other, and spring means urging said guides away from each other.

'ALFRED HENNICKE.

HUGO BOSSEL. 

